package com.applets.common.utils.file;

/**
 * 媒体类型工具类
 *
 * @author LufeiClimb
 */
public class MimeTypeUtils {
    public static final String IMAGE_PNG = "image/png";

    public static final String IMAGE_JPG = "image/jpg";

    public static final String IMAGE_JPEG = "image/jpeg";

    public static final String IMAGE_BMP = "image/bmp";

    public static final String IMAGE_GIF = "image/gif";

    public static final String[] IMAGE_EXTENSION = {"bmp", "gif", "jpg", "jpeg", "png"};

    public static final String[] FLASH_EXTENSION = {"swf", "flv"};

    public static final String[] MEDIA_EXTENSION = {
        "swf", "flv", "mp3", "wav", "wma", "wmv", "mid", "avi", "mpg", "asf", "rm", "rmvb"
    };

    public static final String[] VIDEO_EXTENSION = {"mp4", "avi", "rmvb"};

    public static final String[] DEFAULT_ALLOWED_EXTENSION = {
        // 图片
        "bmp",
        "gif",
        "jpg",
        "jpeg",
        "png",
        // word excel powerpoint
        "doc",
        "docx",
        "xls",
        "xlsx",
        "ppt",
        "pptx",
        "html",
        "htm",
        "txt",
        // 压缩文件
        "rar",
        "zip",
        "gz",
        "bz2",
        // 视频格式
        "mp4",
        "avi",
        "rmvb",
        // pdf
        "pdf"
    };

    public static String getExtension(String prefix) {
        switch (prefix) {
            case IMAGE_PNG:
                return "png";
            case IMAGE_JPG:
                return "jpg";
            case IMAGE_JPEG:
                return "jpeg";
            case IMAGE_BMP:
                return "bmp";
            case IMAGE_GIF:
                return "gif";
            default:
                return "";
        }
    }
}
